In the proportion of fertilization, phosphorus, potassium fertilizer and zinc fertilizer are all used as base fertilizer, 50% of nitrogen fertilizer is used as base fertilizer, and 50% is used as top dressing. The base fertilizer is ditched deep, or evenly spread on the surface before the cultivated land, and then ploughed underground, flattened, and planted. According to local conditions, the joint fertilizer is applied, and the wheat generally enters the jointing stage in late February to early March. The timing of top dressing is generally reduced in the wheat population, the leaf color is lighter, and the regular top dressing at the base of the stem is suitable. The amount of top dressing can generally be applied according to 40%-50% of the total nitrogen application rate of wheat, and 10-12 kg of urea is applied per mu, and the photosynthetic nutrient film fertilizer is used together to improve the absorption capacity. The method of topdressing can be done by spraying or spraying after spraying. Spray 1%-2% urea and Zhuangsuiling from the booting stage to the early stage of filling, spraying 50-60 kg per acre. Foliar topdressing is best carried out after 4 pm on a sunny day, and sprayed again at intervals of 7-10 days. If there is rain within 24 hours after spraying, it should be sprayed once. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Plastic Test Tubes,Plastic Conical Tubes,Conical Bottom Plastic Tubes,Cylindrical Bottom Plastic Serological Tubes Yancheng Rongtai Labware Co.,Ltd , https://www.rongtailab.com